MARTA hired a lobbyist Tuesday, moments after a union official accused state Rep. Jill Chambers of trying to force a state takeover of the agency. MARTA’s board fears a projected $80 million deficit will result in disastrous service cuts without state relief. “If we don’t get something done, a year from now we’re not going to be providing anything you could reasonably call transit service,” Chairman Michael Walls said. UPDATE: New lobbyist Bernard Reynolds will have to earn his keep, judging from Chambers’ latest e-mail today.